The first constraint any Manhattan millwork project encounters is not the wall or the ceiling. It is the service elevator.
This is not a metaphor. The cab dimensions of the service elevator at a specific building determine the maximum length of any panel, carcass, or assembled unit that can enter the building in one piece. Door width determines whether a finished upper cabinet can be moved through the opening horizontally or must be tilted, which in turn affects how the piece is built and whether certain joinery methods are viable. Weight limits — often 1,500 to 2,500 pounds in pre-war buildings — affect how pieces are staged, sequenced, and brought to the floor.
We measure the elevator on every project before we finalize panel dimensions. Not after the drawings are approved. Before.
The reason this matters is that a drawing produced without this information is not a real drawing — it is a proposal that may or may not survive contact with the building. A 96-inch panel that cannot fit in the elevator must either be built in two pieces with a field joint, or it cannot be built at all. A field joint is not inherently bad. A field joint that was not designed is.
Pre-war co-op buildings present the most constrained service conditions in New York. The elevators are typically small, slow, and operated by building staff with specific windows for construction deliveries. The managing agent sets the schedule. The super controls service elevator access and has opinions about how the job is run. Understanding who to talk to about what, and in what order, is part of the project.
Glass tower buildings often have larger service access and more flexible delivery scheduling. But they present their own constraints: concrete slab construction with fixed floor-to-ceiling heights, hollow-core drywall over metal stud, and blocking requirements that must be coordinated before the millwork is fabricated. A panel that arrives and finds no blocking in the wall is a panel that cannot be installed that day.
The reference we publish on New York building typologies and their constraints covers the full range of conditions we encounter — pre-war co-ops, post-war concrete, glass towers, townhouses, and loft conversions. Each building type has its own service logic, its own structural reality, and its own administrative layer.
Twelve years of New York projects have produced one reliable rule: the buildings that cause the most problems during installation are the ones where site conditions were assumed rather than confirmed. The buildings that go smoothly are the ones where we knew the elevator dimensions in week one.